Krlce-httllimtgr machine



J. F.. TAYLOR.

Rice Huller Aand Cleaner..

No. 20,830* Y Patented July 6, 1858.

UNITED sTATEs PATENT oEEicE.

J. F. TAYLOR, OF CHARLESTON, SOUTH CAROLINA.

RICE-HULLING MACHINE.

Specification of Letters Patent No. 20,830, dated July 6, 1858.

To all whom it may concern:

Be it known that I, JOHN F. TAYLOR, of Charleston, in the district ofCharleston and State of South Carolina, have invented a new and usefulImprovement in Rice Hulling and Cleaning Machines; and I do herebydeclare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making a part ofthis specification, in which- Figure l, is a vertical central section ofa rice hulling and cleaning machine constructed according to myinvention. Fig. 2, is a plan or top view of ditto.

Similar letters of reference indicate corresponding parts in the twofigures.

The object of this invention is to obviate the difliculty attending theuse of the crank, which has hitherto been most commonly employed forgiving a reciprocating motion to a pestle which works within a vessel ofproper form. The pestle requires to be driven with a rapid motion, andas the resistance to its movement is of course variable, more forcebeing required at its downward than at its upward stroke, the crank pinas well as the ournals of the crank shaft soon becomes worn and rendereduseless.

This invention consists in giving a reciprocating motion to the pestleby attaching the same to a lever which is operated through the medium ofthree geared eccentrics arranged as hereinafter fully shown anddescribed, whereby the pestle may be rapidly driven with but little wearof the working parts and by a moderate expenditure of power.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a bedpiece, to the front end of which a vessel B, isattached. This vessel contains the rice to be operated upon and it is ofthe usual semi-ellipsoidal form, as shown clearly in Fig. l.

C, is a lever, or lever frame one end of which is attached by a fulcrumpin a, to the back part of the bed-piece A. This lever is of curved formand to its front end the pestle D, is permanently attached, said pestlebeing within the vessel B.

E, E, are two curved or segment arms attached to the bed-piece A, atopposite sides. Between these arms the front part of the lever frame C,passes and Works.

Vithin the lever frame C, an eccentric F, is fitted or placed. Thiseccentric is toothed and it gears into two similar eccentrics G, H, one,G, being above and the other H, below it. The shafts or axes of theeccentrics Gr, H, have their bearings in the arms E, E, the bearings ofthe eccentric Gr, H, being permanent. The eccentrics are all of the samesize, and the upper and lower eccentrics G, H, always coincide inposition. See Fig. l. The eccentric F,has a reverse position relativelywith the eccentrics G, H, and consequently by turning the axis or shaftof either eccentric Gr, H, a reciprocating motion will be given thelever and pestle.

The fulcrum pin a, is placed at a level or nearly so, with the bottom ofthe pestle, when the latter is down, see Fig. 1. Consequently the pestleas it rises and falls, will, when its motion is considered relativelywith the vessel B, approximate as near as possible to a verticalmovement.

The pestle operated by the above described arrangement of means may berap` idly driven wit-h but little wear of the working parts. The pestlebeing permanently attached to the lever frame C, prevents any play ofthe same, which occurs to a greater or less degree in all rice hullersand cleaners with which I am acquainted of previous construction. Themachine works smoothly, requires but a moderate amount of power tooperate it, and it may be constructed at a reasonable price.

The operation of the pestle on the rice within the vessel B, isprecisely the same as in the old machines and therefore need not bedescribed.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is,

The employment or use of the curved lever frame attached at one end tothe bed piece A, and having the pestle D, permanently secured to itsopposite end, the above parts being placed relatively with the vessel B,as shown and described, and used in connection with the gearedeccentrics F, G, H, arranged relatively with each other and the leverframe C, substantially as and for the purpose set forth.

J. F. TAYLOR.

Witnesses:

A. ROBERTSON, E. I-I. RODGERS.

